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WEEK 11 PREDISCUSSION WORKSHEET. The following should be done before coming to discussion in Week 11 1. Write the products and balance the following reactions. (a) Combustion of CH 0 (b) Combustion of C.H1206 Single Displacement Reactions 2. Using the activity series in Table 6-3, indicate if the following reactions will occur. If so, predict the products and balance the reaction. a) Mg + Co(NO3)3 → d) Hz + AgNO3- b) Sn + CuCl2- e) ZnCl2 + Al- c) K+ MgO - f) Al + Fe2O3- Redox Reactions 3. Assign oxidation numbers to each element in the equations below. Which element gained electrons? Which on lost electrons? Identify if it was oxidized or reduced. 2 A1,0,(8) + 3 C(s) - 4 Al(s) + 3 CO,(g) Element Oxidation # on reactant side Oxidation # on product side Gain or lose electrons? Was the element oxidized or reduced? ΑΙ Chemistry 101 Workbook Part III: Discussion Worksheets

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WEEK 11 PREDISCUSSION WORKSHEET. The following should be done before coming to discussion in Week 11 1. Write the products and balance the following reactions. (a) Combustion of CH-0 2C3H70 + 17/2 02 ---------> 6002 + 7 H20 (b) Combustion of C.H1206 C6H1206 +6 02 ---------> 6CO2 + 6H2O Single Displacement Reactions 2. Using the activity series in Table 6-3, indicate if the following reactions will occur. If so, predict the products and balance the reaction. a) Mg + Co(NO3)3 → d) Hz + AgNO3 → H2(g) + 2AgNO3(aq) ----> 3Mg(s) + 2Co(NO3)3(aq) ----> 2HNO3(aq) + 2 Agls) 3Mg(NO3)2(aq) + 2 Co(s) b) Sn + CuCl- e) ZnCl2 + Al- 2Al(s) + 3ZnCl2(aq) ----> Sn(s) + CuCl2(aq) ---> 2AICI3(aq) + 3Zn(s) SnCl2(aq) + Cu(s) c) K + MgO - f) Al + Fe2O3- 2K(s) + Mgo(aq) ----> 2Al(s) + Fe2O3(aq) ---> K20(aq) + Mg(s) Al2O3(aq) + 2Fe(s) Redox Reactions 3. Assign oxidation numbers to each element in the equations below. Which element gained electrons? Which on lost electrons? Identify if it was oxidized or reduced. 2 A1,03() + 3 C(s) + 4 Al(s) + 3 CO2(g) Element Oxidation # on reactant side Oxidation # on product side Gain or lose electrons? Was the element oxidized or reduced? ΑΙ gain reduced no loss or no gain neither lose electrons oxidized 124 Chemistry 101 Workbook Part III: Discussion Worksheets

Double Displacement Reactions 4. Predict the product(s) of these double displacement reactions: Assign the states of the products using the solubility trends. (a) Mix solutions of AgNO, and NaCl. Ions in first solution: lons in second solution: Na+ and CI- Ag+ and NO3- Mix cation from first solution and anion from second: Ag+(aq) + Cl-(aq) --------> AgCl(s) Possible reaction: AgNO3(aq) + NaCl(aq) --------> AgCl(s) + NaNO3(aq) (b) Mix solutions of Ba(NO3), and K,SO- Ions in first solution: Ba2+ and 2 NO3- lons in second solution: 2 K+ and S042- Mix cation from first solution and anion from second: Ba2+(aq) + SO42- (aq) --------------> BaSO4(s) Possible reaction: Ba(NO3)2(aq) + K2SO4(aq) --------> BaSO4(s) + 2KNO3(aq) (c) Mix solutions of CaCl and Na PO, Ions in first solution: Ca2+ and 2 CI- Ions in second solution: 3 Na3+ and P04 Mix cation from first solution and anion from second: 3Ca2+ (aq) + 2P043(aq) -------> Ca3(PO4)2(s) Possible reaction: 2Na3PO4(aq) + 3CaCl2a).......> Ca3(PO4)2CS) + 6 Naclag) Chemistry 101 Workbook Part Ill Discussion Worksheet